A 50 Hz, 400 kV transmission line is 450 km long and has the following parameters: r = 0.033 ohm/km, L = 1.067 mH/km, C = 0.0109 μF/km. It is delivering 450 MW power at a power factor of 0.95 lagging. Neglecting the leakage conductance, the load angle is:
(c) 3.23°
(a) 11.23°
(b) 16.23°
(d) None of these above Values
A three-phase, 100 km transmission line is delivering 50 MW, 0.8 pf lagging at 132 KV. Each conductor is having resistance 0.1 Ω/ km, reactance 0.3 Ω/ km and admittance 3 x 10^-6 mho/ km. If the load is balanced and leakage is neglected By using T model The Efficiency is
(b) 89.99%
(a) 85.66%
(c) 90.88%
(d) None of these above Values